<?php
namespace app\common\model\sms;

use aliyun\DySDKLite\SignatureHelper;
use think\facade\Request;
use think\Facade\Cache;
use app\common\model\BaseModel;

/**
 * 阿里云短信模型
 */
class Sms extends BaseModel
{
    private $accessKeyId = "LTAI5t8jyywpCYCxYDkbi7Ck";
    private $accessKeySecret = "6IXXiYyucVWFPv7bFdwv3uoWNMQttf";

    const TYPE_REGISTER = 1;        //注册
    const TYPE_LOGIN = 2;           //登陆
    const TYPE_RESET_PWD = 3;       //重置密码
    const TYPE_RESET_TEL = 4;       //更换手机
    const TYPE_SETMSG = 5;       //发送信息
    private $error_msg = '';
    protected $name = 'sys_message';

    /**
     * 发送验证码
     * @param string $tel 用户手机号
     * @param string $type 类型
     * @return bool
     */
    public function send_message_code($tel, $type)
    {
        //判断1分钟内不能重复操作
        $is_send = Cache::get('is_send_'.$tel);
        if($is_send == 1){
            $this->error_msg = '短信已发送，请1分钟后重试!';
            return false;
        }
        //判断一天的发送次数

        //生成验证码
        $code = str_pad(mt_rand(100000, 999999), 6, "0", STR_PAD_BOTH);
        //数据组装
        $msg_data = array(
            'code' => $code,
            'types' => $type,
            'create_time' => time(),
            'available_time' => time() + 120,
            'action_time' => time(),
            'mobile' => $tel,
        );
        //数据校验
        if(!preg_match("/^1[3456789]\d{9}$/", $tel)){
            return $this->error_msg = '手机格式错误';
        }
        $result = $this->insertGetId($msg_data);
        if($result){
            //调用短信服务接口
            $this->do_send($tel, $type, $code);
            Cache::set('is_send_'.$tel, 1, 60);
            return $code;
        }else{
            $this->error_msg = '系统超时';
        }
        return false;
    }

    /**
     * 获取短信模板
     * @author mwd
     * @param $type
     * @return string
     */
    private function get_template($type)
    {
        switch($type)
        {
            case self::TYPE_REGISTER:
                $template = 'SMS_215395334';
                break;
            case self::TYPE_RESET_PWD:
                $template = 'SMS_215395333';
                break;
            case self::TYPE_RESET_TEL:
                $template = 'SMS_215395332';
                break;
            case self::TYPE_SETMSG:
                $template = 'SMS_216278205';
                break;
            default:
                $template = 'SMS_215395336';
        }
        return $template;
    }

    /**
     * 校验验证码
     * @author mwd
     * @param string $tel 手机号
     * @param string $code 验证码
     * @param int $type 验证码类型
     * @return bool
     */
    public function check_message_code($tel, $code, $type)
    {
        //查询验证码
        $cdn['mobile'] = $tel;
        $cdn['code'] = $code;
        $cdn['type'] = $type;
        $msg = $this->msg_model->where($cdn)->find();
        if (!$msg) {
            $this->error_msg = '验证码校验失败';
            return false;
        }
        //更新验证码状态
        $cdn = array('checked' => 0);

        if ($msg['checked'] != 1) {
            $msg->save(['checked' => 1, 'action_time' => time()]);
            return true;
        } else {
            $this->error_msg = '验证码已经使用';
            return false;
        }
    }

    /**
     * 获取错误
     * @author mwd
     * @return string
     */
    public function get_error()
    {
        return $this->error_msg;
    }

    /*
     * 发送短信信息
     * */
    public function send_msg($tel,  $code,$type='TYPE_SETMSG')
    {
        $params = array ();
        // fixme 必填：是否启用https
        $security = false;
        $params["PhoneNumbers"] = $tel;

        // fixme 必填: 短信签名，应严格按"签名名称"填写，请参考: https://dysms.console.aliyun.com/dysms.htm#/develop/sign
        $params["SignName"] = "顺亨网络科技";

        // fixme 必填: 短信模板Code，应严格按"模板CODE"填写, 请参考: https://dysms.console.aliyun.com/dysms.htm#/develop/template
        $params["TemplateCode"] = $this->get_template($type);

        // fixme 可选: 设置模板参数, 假如模板中存在变量需要替换则为必填项
        $params['TemplateParam'] = Array (
            "remark" => $code,
        );

        // *** 需用户填写部分结束, 以下代码若无必要无需更改 ***
        if(!empty($params["TemplateParam"]) && is_array($params["TemplateParam"])) {
            $params["TemplateParam"] = json_encode($params["TemplateParam"], JSON_UNESCAPED_UNICODE);
        }

        // 初始化SignatureHelper实例用于设置参数，签名以及发送请求
        $helper = new SignatureHelper();

        // 此处可能会抛出异常，注意catch
        $content = $helper->request(
            $this->accessKeyId,
            $this->accessKeySecret,
            "dysmsapi.aliyuncs.com",
            array_merge($params, array(
                "RegionId" => "cn-hangzhou",
                "Action" => "SendSms",
                "Version" => "2017-05-25",
            )),
            $security
        );
        return $content;
    }

    /**
     * 调用短信发送服务
     * @author mwd
     * @param $tel
     * @param $type
     * @param $code
     * @return bool|\stdClass
     */
    private function do_send($tel, $type, $code)
    {
        $params = array ();
        // fixme 必填：是否启用https
        $security = false;
        $params["PhoneNumbers"] = $tel;

        // fixme 必填: 短信签名，应严格按"签名名称"填写，请参考: https://dysms.console.aliyun.com/dysms.htm#/develop/sign
        $params["SignName"] = "联合拉";

        // fixme 必填: 短信模板Code，应严格按"模板CODE"填写, 请参考: https://dysms.console.aliyun.com/dysms.htm#/develop/template
        $params["TemplateCode"] = $this->get_template($type);

        // fixme 可选: 设置模板参数, 假如模板中存在变量需要替换则为必填项
        $params['TemplateParam'] = Array (
            "code" => $code,
        );

        // *** 需用户填写部分结束, 以下代码若无必要无需更改 ***
        if(!empty($params["TemplateParam"]) && is_array($params["TemplateParam"])) {
            $params["TemplateParam"] = json_encode($params["TemplateParam"], JSON_UNESCAPED_UNICODE);
        }

        // 初始化SignatureHelper实例用于设置参数，签名以及发送请求
        $helper = new SignatureHelper();

        // 此处可能会抛出异常，注意catch
        $content = $helper->request(
            $this->accessKeyId,
            $this->accessKeySecret,
            "dysmsapi.aliyuncs.com",
            array_merge($params, array(
                "RegionId" => "cn-hangzhou",
                "Action" => "SendSms",
                "Version" => "2017-05-25",
            )),
            $security
        );
        return $content;
    }

    /**
     * 生成签名并发起请求
     *
     * @param $accessKeyId string AccessKeyId (https://ak-console.aliyun.com/)
     * @param $accessKeySecret string AccessKeySecret
     * @param $domain string API接口所在域名
     * @param $params array API具体参数
     * @param $security boolean 使用https
     * @param $method boolean 使用GET或POST方法请求，VPC仅支持POST
     * @return bool|\stdClass 返回API接口调用结果，当发生错误时返回false
     */
    public function request($accessKeyId, $accessKeySecret, $domain, $params, $security=false, $method='POST') {
        $apiParams = array_merge(array (
            "SignatureMethod" => "HMAC-SHA1",
            "SignatureNonce" => uniqid(mt_rand(0,0xffff), true),
            "SignatureVersion" => "1.0",
            "AccessKeyId" => $accessKeyId,
            "Timestamp" => gmdate("Y-m-d\TH:i:s\Z"),
            "Format" => "JSON",
        ), $params);
        ksort($apiParams);

        $sortedQueryStringTmp = "";
        foreach ($apiParams as $key => $value) {
            $sortedQueryStringTmp .= "&" . $this->encode($key) . "=" . $this->encode($value);
        }

        $stringToSign = "${method}&%2F&" . $this->encode(substr($sortedQueryStringTmp, 1));

        $sign = base64_encode(hash_hmac("sha1", $stringToSign, $accessKeySecret . "&",true));

        $signature = $this->encode($sign);

        $url = ($security ? 'https' : 'http')."://{$domain}/";

        try {
            $content = $this->fetchContent($url, $method, "Signature={$signature}{$sortedQueryStringTmp}");
            return json_decode($content);
        } catch( \Exception $e) {
            return false;
        }
    }

    private function encode($str)
    {
        $res = urlencode($str);
        $res = preg_replace("/\+/", "%20", $res);
        $res = preg_replace("/\*/", "%2A", $res);
        $res = preg_replace("/%7E/", "~", $res);
        return $res;
    }

    private function fetchContent($url, $method, $body) {
        $ch = curl_init();

        if($method == 'POST') {
            curl_setopt($ch, CURLOPT_POST, 1);//post提交方式
            curl_setopt($ch, CURLOPT_POSTFIELDS, $body);
        } else {
            $url .= '?'.$body;
        }

        curl_setopt($ch, CURLOPT_URL, $url);
        curl_setopt($ch, CURLOPT_TIMEOUT, 5);
        curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
        curl_setopt($ch, CURLOPT_HTTPHEADER, array(
            "x-sdk-client" => "php/2.0.0"
        ));

        if(substr($url, 0,5) == 'https') {
            curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false);
            curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, false);
        }

        $rtn = curl_exec($ch);

        if($rtn === false) {
            // 大多由设置等原因引起，一般无法保障后续逻辑正常执行，
            // 所以这里触发的是E_USER_ERROR，会终止脚本执行，无法被try...catch捕获，需要用户排查环境、网络等故障
            trigger_error("[CURL_" . curl_errno($ch) . "]: " . curl_error($ch), E_USER_ERROR);
        }
        curl_close($ch);

        return $rtn;
    }


}